Service manual

Tx OUTPUT SET AS CH18(156.9MHz)
OUTPUT POWER : HIGH
PTT ON
VR2 24W±1W V-896
FREQUENCY
VARIATION
SET AS CH18(156.9MHz)
OUTPUT POWER : LOW
PTT ON
CHECK BY FREQUENCY COUNTER
156.9MHz±
200Hz
MAXIMUM
FREQUENCY
DEVIATION
MODULATION METER SETTING
RANGE=10
FILTER=25Hz~15KHz
DE-EMPHASIS=OFF
VR3 UNDER
±5KHz
V-896
Rx
RxRx
Rx
MEASURE MEASURE CONDITION PART VALUE POSITION
PLL
VOLTAGE
ADJUSTMENT
SET AS CH18(156.9MHz)
CHECK VOLTAGE OF TP1
VC1 2V±0.1V V-896
RECEIVING
SENSITIVITY
SSG SETTING
FM MODULATION FREQUENCY =1KHz
DEVIATION =±3KHz
CHECK THE SIZE, AFTER CHANGING
THE SIZE OF SSG FOR SINAD Meter
VALUE TO BECOME 12dB.
UNDER
0.3uV
EXCLUSIVE Rx
EXCLUSIVE RxEXCLUSIVE Rx
EXCLUSIVE Rx
MEASURE MEASURE CONDITION PART VALUE POSITION
WKR
PLL VOLTAGE
ADJUSTMENT
SET AS CH70(156.525MHz)
CHECK VOLTAGE OF TP1
VC1 2.5±0.1V V-894
WKR
RECEIVING
SET AS CH70(156.525MHz)
SET SSG
UNDER
0.3uV
V-894